int
osi_VMDirty_p(struct vcache *avc)
{
int dirtyPages;
if (avc->execsOrWriters <= 0)
return 0; /* can't be many dirty pages here, I guess */
#if defined (AFS_AIX32_ENV)
#ifdef notdef
/* because of the level of hardware involvment with VM and all the
* warnings about "This routine must be called at VMM interrupt
* level", I thought it would be safest to disable interrupts while
* looking at the software page fault table. */
/* convert vm handle into index into array: I think that stoinio is
* always zero... Look into this XXX */
#define VMHASH(handle) ( \
( ((handle) & ~vmker.stoinio) \
^ ((((handle) & ~vmker.stoinio) & vmker.stoimask) << vmker.stoihash) \
) & 0x000fffff)
if (avc->segid) {
unsigned int pagef, pri, index, next;
index = VMHASH(avc->segid);
if (scb_valid(index)) { /* could almost be an ASSERT */
pri = disable_ints();
for (pagef = scb_sidlist(index); pagef >= 0; pagef = next) {
next = pft_sidfwd(pagef);
if (pft_modbit(pagef)) { /* has page frame been modified? */
enable_ints(pri);
return 1;
}
}
enable_ints(pri);
}
}
#undef VMHASH
#endif
#endif /* AFS_AIX32_ENV */
#if defined (AFS_SUN5_ENV)
if (avc->f.states & CMAPPED) {
struct page *pg;
for (pg = avc->v.v_s.v_Pages; pg; pg = pg->p_vpnext) {
if (pg->p_mod) {
return 1;
}
}
}
#endif
return 0;
}
void mutex_wait(mutex_t *mutex)
{
disable_ints();
enable_kernel_preempt();
enable_ints();
}
int main()
{
/* const extern u32 _KERNEL_START[],_KERNEL_END[];
const extern u32 K_CODE_SEL[], K_DATA_SEL[];
const extern u32 _KERNEL_TEXT_START[],_KERNEL_TEXT_END[];
const extern u32 _KERNEL_DATA_START[],_KERNEL_DATA_END[];
const extern u32 _KERNEL_BSS_START[],_KERNEL_BSS_END[]; */
tty_cls();
banner();
/*if(TEST_BIT(K_MULTIBOOT_INFO->flags,MBI_FLAGS_MMAP)){
kprintf("MMAP Present: 0x%x\n",K_MULTIBOOT_INFO->mmap_addr);
memory_map_t *mmap;
for(mmap=(memory_map_t *)K_MULTIBOOT_INFO->mmap_addr;
(u32)mmap<K_MULTIBOOT_INFO->mmap_addr + K_MULTIBOOT_INFO->mmap_length;
mmap=(memory_map_t *)((u32)mmap+mmap->size+sizeof(mmap->size))){
kprintf("[%d] addr=0x%x-0x%x\n",mmap->type,mmap->base_addr_low,(mmap->base_addr_low+mmap->length_low));
}
}*/
kprintf(" > Initialising system services...\n");
init_interrupts();
init_paging();
init_heap();
set_cpu_caps();
init_pic();
init_timer();
init_process();
kprintf(" > Enabling kernel preemption...\n");
enable_kernel_preempt();
enable_ints();
kprintf(" > Spawning core process...\n");
create_process("core",NULL,&core);
/* We may get to here for a very short amount of time while we enable preemption */
while(1);
}
